Articulator.



R. E. H ALKL. ARTIGULMQH, APPLICATION FILED JUNE 20,1916.,

' -fatented Mar.- 6, 19171 .3 SHEETS-SHEET l.

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wx w WSN ttomu' R. E. HALL.

ARTICULATOB. 1 Armcmlon FILED :une 20.1916. 5 I A Patented Mar. b, 1917.

s saturi-snaar l2. 1

@vi/Imm H. E. HALL.

ARTICULATOR. APPLICATION man lum: 20.1916.

Pantedmn 6, 1917.

3 SHEETS-SHEET 3.

liisinulate` the movement ot' the RUPERT E. HALL, F PHILADELPHIA,PENNSYLVANIA.

mencionaron.

Speciilcation of Letters Pate-nt.

Patented Mar. 6, 1917.

Application tiled June 20, 1916. Serial No. 104,812.

To all whom it may concern.'

Be it known that l, RUPERT F. HALL, a citizen of the United States, anda resident of Philadelphia, in theconnty of Philadel jj1hia,State otlennsylvania. have invented certain new and useful improvements inArticulattn's, of which the following is a specification, referencebeing liad`to` the aecompany ing' ldraw ings.

My invention relates particularly to that class oi devices which asdenial articulators, and which are arranged to support for relativemovement .sets of artificial teeth in such relation as to teeth carriedliy the human jaw.

The principal objects of my invention are, to provide produce withprecision the natural rela.-

tive masticatory movements of the human jaws, hut which may lie soadjnstedas to vary the overl'iite relation of the opposing teeth carriedthereby.

i `Other objects of my invention are, to pro' videan articulator havingadjustable means for accurately setting the jaw model hold- A ing partsin accordance with the measure-` ments and conditions found in eachiiidividual case. j My invention l'supporting suitable measuring implements,such as a fa -e-liow oi any well known eonstruction7 af differentdistances-'from the )lane of occlusionfof the jaw models.

Specifically stated. the forni of my invention ashereinafter describedcomprises upper and lower jaw model carriers so pivoted together lhatthe central incisive point traven.,` a `eeodesic path r-,onforininglical surface, and provides means or varying the longitudinal relation ofthe jaw model carriers, whereliy-the teeth of the jaw modcls may he.om-.holed with varying degrees of overliitc.

My in'i'ention also includes ill of the various `noijel `features -ofeonstri l on and ar ranireiniint as hereinafter Vmore definitelyspecilied.

arrlevational VView of said articulator;

are commonly knownV mechanism that willnot only re-` coinpreln-.ndsmeans for to a coni- .rea'i'-\vai'dly. a The slide 4through the In theaccompanying drawinigsi* igure I is.

of the artieulater shown in Figs. l and ll; Fig. IV is. a"

V is a plan view on a reduced scale of the forward upper portion of saidarticulator, showing the face-bow attached thereto; and Fig. VI is aside elevational view of the structure shown in Fig. V. v v In saidfigures, the base 1 is provided at its forward end with laterallyprojecting feet 2 and at its rear end with the pedestal, 3 forming thebearing abutment 4,"whieh carries'the pintle 5 projecting therefrom inforwardly obliquev relation and has its axis disposed approximatelyforty-five degrees with the horizontal plane of the-base.

The pintle 5 1s arranged to rotatably sup j port the swivel post 6,which has the projecting extension 'i' overlying and conforming to thecurved surface 9 of the bearing abutment 4, and has the lip 1 projectingunder the shoulder 11 of said bearing abutment 4, said lip being securedto the extension 7 by the screws 12. Q

`he swivel' post (l extends obliquely in alineinent with the axis of thepintle 5 is -provided 'at its upper end with a horizon- 'i tal surface13 upon which the slide plate 15 is supported for longitudinaladjustment, beingr provided with the longitudinally extend-ing slot 1Gthrough which the thumband screw 17, which is in threaded engagementwith the' swivel post (i, extends. Said slide `plate l5 is provided withlaterally extending oppositely direc-,ted arms 1l) affording hearings2() which have laterally projectin finger pieces 2.1, the purposeofwhich wiil lie hereinafter described.

Conveniently mounted in the bearings 20 are bushing sleeves 22, eachhaving 4a collar 23 arranged to abut against the Aforward .surface ofthe bearing,r 20, 'sleeves 22= provide parallel slide rods 25 of theyyoke prises the transverse liar 27 and lateralliearings 28 from whichsaid slide rods 25 project rods 25 extend bushing sleeves 22 and projectrearwardly from `the'hearing 28 and are provided with thnmli-nuts 29,and jam-'nuls 510 arranged to hold said thumb-nuts in adjusted positionon said yroda 25. 1

The yoke 26 is normally pressed forward guides for the spective rods'aiul-have `L'lieropposite ends 2.6, which com! Said bushing hearingagainst they forward end of the sleeves 22 and the rearward surface ofthe yoke 2G. The yoke 26 carries -tlie trans versely extendingshaft lll,which is held in place by nnts''ll threaded upon its opposite 455,setfscrewtc f I lo "lt hes been toundgthat int ihumaiiyls' The, forwa'rd end of thebase lis similarly I6 provided withha sea-t-40`havinposed upwardly extending tween which the jllower jaw model Vmounting@slide vplate 42 is disposed, said Aslide platel42 being provided-iwitl` the slot 43 through laterally dis- '2 0 which the setscrew 45,which isin threaded -'engagenent with the base l, extends, and which isarranged to" clamp the slide plate 42 lin different longitudinalpositions with re: )ect to' said base. l 'slide plates 36 und@ Vcarrytherespective-jaw model .mountings 46 amd 47, which ure engaged with saidplates by the ythumii-screws 49 and 50 respectively, lsaid mountings 4Gand 47 being preferably pro- 3'0 vided with )erforntions 51,-,asshowninFig, I,`to 'rovide anchorage for the plaster jaw mode s.l i

The forward end of the plate is proi videdl with a slot'53, throughwhich theA shank 550i the lconical cup 5G extends and in whichlsaid-'shank 55 is adjusted longitudinally'und arranged to be `clamped bySeid conical cup156 i's arranged .to vvreceive and support 'the free endof 'the pin 59 which -ispro'vided with a'bnll `end (i0 and husa threadedv.portion 61 arranged to cxte'nd Athrong'l'tliejaperture"63 in theforward 4 5 end of the plate-3 to, which said'pin muy i4be"aet'ziiredlir'ifdi llerr-ar'it vertical positions byv the nuts'l'a'lltl 65 respective disposed above-and below soidplute-.Z I Y A ,Theupper; artigulatox"1n-l 50. cludin 'this Vrange toyockiugo i s'p'ecttothe lower porti rigid re ation:

' 'ment'withthe r.6 and projetth etliroug Ntp aperture 67, 'disposedffof the bearing abutment 4.

the condyles bea a=spec1f ie` elution. t central incisal vpoint 'oftheteeth' and?,` occipitalv protuherance,Handi' therefore movable .partsoff; the articulator aref-'so 65 gil'aduated tht the jaw Vmodel.carriers are the condylc points and the pivotal anges 41, 4he- 57,which is in threaded en.v

y yoke 26, in threaded engagement therewith,

tending therethrough and b earin l illustration. In| order to" applysaid-f ,I howfto the articulator i-'nrjvingfdist ronrthe acclusa-1"plane of? the opposing ment between the centra-l incisixl point and thecondyle points. The articulator is ad )usted to similarly vary 'therelation between the u )per movable part of said artrculator, and orthis purpose the jaw model mounting'support-ing plates 37 and 42 areprovided `ivith suitably graduated indicating points respectivelyarranged to register with a 75 fixed point o n the. choir 34, uiuljprefernhly have the scribe'nutrks 7l arranged to register with thescribe merk 72 on the flange 3V- of the chair 34. Similarly, the slideplate 15 is provided on its under surface with 80 notches,I 73 arrangedto engage a pin 75 projectingtlaterally from the swivel post 6,

ns shown in Fig. II.

'Corresponding to the graduations 70 xon the plate 37 andthe graduetions73 on the 85 plate 15, the chair 3i is provided in' its opposite sideswith suitably spaced apertures 7,6.

' So spaced as to respectively provide points of connection with thefncc-l ow, to he hereinafter described, and corresponding Ato tlfecondylc axes of different patients, and in accordance with themeasurements found in individual cases, the numerical notation on therespective graduutious 70, -73'and 76 correspond with each 'other, sothat when 95, the n'iezisurement of a particulnr case' is found tocorrespond to thev raduotionV 3, as

inthe illustration, the 'thirt graduation 'ier Y to 'be employedthroughout t at particular rase.

The chair' 34 .is provided witha stop for. normally holding it in apredetermined=ed justed position by the set-screw 77 which en tendsthrtuigli the transverse har 27 of the 'and against which set-.screwsaidchair is ary ranged to bear. The chairlnay, however, be adjusted towardand from the transverse ber 27 to raise and lower the upper jaw v modelwith respect to the/lower jaw model by the` rotation ofthe. setsscrer: 79 which is 'in threaded'engager-@ent with said-chair gru on transversebar 27.55-.4 'best shown" 1n Pig', Figs; Vj `and 'YI If have 4illustrated ion ofl lthe feeehowto the arti per portion is illust u' frsdetached-*trom tlie swivel-post' (i, 'an

1i slightly reduced sea1effor. c'onvenien oint of 70 liefs the i `withthe ditliiirent 1iioneiii'einiiinte oi' i `firmly `zitte rilheextei'isioi'i 81 niiey pi'eieriihl-y he in rigid relation to the member.80, while the exten :sion ie. in threiideil. lent therewith iifidiiiiljiietiihh-.i to reti-:lot ie point 84 towiirifl id `from the pointhel, whereby seid moy heliidjiisted into dili'erent .verti- `it5 und.enge .l with iiny of the op` nos :ly di ed enel-three Til iipoi'i theony hesite sides of the ehiiir til: und. in. ne hinoe of lthe.respective patiente.

The fm. rhow, which le of well known con ing iidjiistnlile. rods 89mounted in suitable ii'igs hevii'ig; threaded tapering; split externsions provided with i'iiits Whieh, muy he iid-- jiieted to hind thevhenri nge upon the laide 85h which are iiirovided nt, their iiiner endewith herido 92 having sockets 93 iirriiiigedto re eeive the teiions 85'end 8G hurried hy the arched l hingitiidinolly theii'eiin'i. of wellknown. emietriiotion. liiivini;i trame werner i dieliioeed openii ce ttith roii Th whieh the iirehed om 7 n'iiiy s ide, :ind thi' L nrriinged toreceive the Stem W3 .mining a hifiireiited eurved @ronge il? for ei.ing' tli'ie trial nliite or Wim niodel 9B. Seid clamping member may lieadjusted. to elninn the Stem 96 to 'irehed hor t?? .in rigid relation bythe tliuinhh-Serew 99.

In operating the device, n, tried ing heenv previously preiinred :indfitted in plete eo tl'iot they etre The triiil rlnte .is thru '[:ihioed.ir/.themonth sind the ieee-how attached tl'iereto hy n'ieiii'ie olf theehiiiiiriing; ii'ieniheri homing the thnn'ili-eerew i J.. The iiiiierende of' the iidj Listing; rods Si. ere tlieiii sliril mentwith theeldeeoii' the heed of the patient oppo te themondihidnr 'the ohinipiisorew heilig' then iid! nriiihed hair S7 :ind stein. ordonne with the`rel lote sind the i'. jid hy the iid-- li' ii'nined iiittiielied edtroni the hein1 he Voir e :rnd S4 e of iiieeiilffiioi'i., n

Il sind di. l' 1 prisilte iii. the ehiiir 34, Whereiiigioiii the 'erefinto r j.

holder niiiivniile 'hiteiiiilly with ri oit the fiieeliow i'i'iiiy heeiipportedylly it lign-p tiire 1.00 rinseii'ig through iin oliening 1.01in' the hall UO of thepin 59 which muy he, as shown. in. Fig. V1,inverted yto provide :i l'iiingei.' for eiiid linee-how und. the modeleuriied thereliiym Hering thin; diiitorinined the position of the waxuioiflels, theyT ere eoiii'ieeted with the f' reeiiieotire um lir and"lower model iliount-y ings LMilind xi by Ihieter in orwell. knowi'i'l-5iniini'ieiri u l It muy he here noted that the teeth muy he ground hyooeluding them ,with varying degrees oli ovini-bite, hy longitudinallyedf jue ing the yoke 2G with respect to the slide plete 1f, whichei'ii'iveniently accomplished hy rotating the thumb-nuts 29 iipon thethree. id slide rods 25 in opposition to the eprin e 2il. which permitthe longitudinal movement of the iip'igier jow model-With reeneet to the.lower jew model, by pressing eiii'l 'Volte 2li toward. sold slide plate1.5`indeij mtljiY of the iistmentof the thumbnnte El? hip' engnging theyoke 2G and finger pieces-s 2l "ete .i the thiimh and fore fingers 90ol" theoperiiti o .l

I do'not desire to liinitiny invention to the preciso detnile ofeonstriziotion and arrange-v ment as herein Set forth, :is it is obviousthat viirioiis niodifiontions may he ii'iiidmtlieifein 95. Withoutdeiinrting from the eesentiiil features ot my invention as defined inthe ap peiided eloinfie. X i

chil .i i.

il., A dental nrtieiihttor compr Sing :i lower `join' model hl.. er, :inupper 'jiiw model holder piroted tlieieto, siizioed ineens tend-- :ing'to yieldinglli" Lt'oieeeziid jow model hold.-V

` Mietry, und menne for relatively odjiietiiig said jew' i'i'ioiflelholders Solistentiiilluy iiiriillel with their longitudinal :lies in om?ition to said yielding,r means.

a 2. A.. dental :irrtienliitor eoi'npi'ising n.. .lilwer jew i'iiodelliohler.l :in upper jaw model 113 holder nioviihle laterally withrespect theretoy fhiteritlljy' diepoed parallel support/sinoviihlyenrrjriiig Suid upper jaw model l'iolderw` in tending.; toyieliilil'igly force Suid jin model hiiihlere into registry7 :ind mennefor 115 relii-tiveiy zii'ljiieting vSuid .inw ifi'iodel holderslonoitiidinnflly in opi'iosition to seid. yielding men. .A (lei'itii-lnrtioiilntor eompri g1 n` lower :w inode! holder, :in upper inw model imeet tliere to en disposiid linen opiiioeite eidesv of thenieliiiliihiiio tendini;u to force lsaid jew model, e-'i i into registry in thediri-.action of ti i, and menne :toting in, oiiiiii'ieil n A ringeiidjiiethhle "to *if thi' igitiidiniil. reli'ition'of i'noflel.liol'deien i y ,l i n it i'itnl nrtienlotor prising e, lower 1i :iwinodel hohilen ripper Jur model `1&0

. "leansmodel. holders into registry, and means for lrelatively adjustinf said jaw model holders 'substantially para lel with their longitudinalaxes in opposition to ,said yielding 5. A. dental articulatorcomprisinga. base, a lowerjawA model vholder carried'by said base andadjustablev longitudinally with respeet thereto, a frame pivoted 'tosaid base upon an axis oblique tothe lane of occlusion Aof said jaws andad justab e longitudinally,

and an upper jaw model ,holder carried by said -.fra me and adjustable'with respect thereto, said fraaie and jaw model holders each havinggradnations for determining their relative adjustment.

(i. A dental articulator comprising a. base, a lower jaw model holdercarried by said base and longitudinally adjustable with respect thereto,a frame pivoted to said base on an axis disposed obliquely with respectto said base amdlongitlulinally adjustable thereon, and anupperjaw.model holder hingedly carried by said frame and longitudinallyadjustable thereon, said' frame and model holders havin graduations'fordetermining their relative ongitudinal adjustments, and said framehaving graduations for determining the position of the condylc points ofthej aw models carried by` said jaw model holders.

with respect tothe occlusal plane.

7. A dental articnlator comprising a. lower jaw model llolderban u'pperjaw model holder pivotally connected thereto and arranged to oscillatelaterally with the medial poil; `fthe'upper jaw model describing ageodesic line about the surface of a cone.

. 8. A dental articulator having relatively movable upper and lower jawmodel holders, spring means disposed upon opposite sides of the medialplane tending to force said jaw model holders into registry, andthreaded means connected with the upper jaw model holder at its oppositesides adjustable to vary the longitudinal relation of said jaw modelholders.

with a base, of a jaw. model holder carried by said basein adjustablevrelation therewith, a pintle carried by said base in inclined relation,thereto,`a swivel post mOunt'ed'to 'oscillate on said pintle, a. slideplate ably carried on said st', a frame carried by said slide plate, ina

` to, and an upper jaw model holderphiug'edl connected-with said frameand longitudinally adjustable thereon. l

10. In a dental articulator the combination withA a base having aAarin'g whose axis extends in oblique relation to said base, a lower Lawmodel holder adjustably cariliod by said ase, a swivel post mounted torock 9. In a dental articulator, the combination-A justable relationthereon said bearing, a slide plate adjustably mounted on said swivelpost., a frame carried by said slide plate, 'a chair hinged to saidframe and arranged to rock on a horizontal axis, an upper jaw modelholder carried by Said .chair and adjustable thereon, and means arrangedto adjust said chair to vary the spaced relation' of said jaw modelholders.

11. In a dental articulator, the combination with a base having aninclined bearing, of av lower `jaw model holder adjustable thereon, acup carried by said holder, tapering downwardly toward its center, anupper aw model holder pivotally carried by said ase and arranged to,rock with respect to said lower jaw model holder, and a pin onl said'upper jaw model holder having its free end arranged to rest in and rideuponthe walls of said cup.

12,. In'a dental articulator, the combination with -a base, of a lowerjaw model holder adjustably mounted thereon, an upper jaw model holderpivotally carried by said base and arranged to rock laterally withrespect thereto, a conical cup carried by' said lower jaw model holdertapering downwardly toward the center, and a pin adjustably carried bysaid upper jaw model holder and arranged to rest inl and ride upon Vthewalls of said cup.

13. In a dental articulator, the combination with a base,.of a lowerjawmodel holder carried by said base, an upper jawmodel holder pivotallyconnected with said base and arranged to rock with respect thereto, andremovable jaw model mountings, comprising perforated lates carried bysaid respective jaw model loldersv.

14. In a dental articulator, the combination with a base having an,inclined bearing and provided with a lower jaw model holder, of -aswivel post mountedto oscillate on said inclined bearing about an axisdisposed ololiquely to said base, an upper jaw model holder oarried'bysaid posa-and means to lock said post with respect to said base.

15. In a dentalV articulator, the combination with a vbase having aninclined bearing, of a, lower jaw model liplder carriedby said base, aswivel post mounted upon said bearing andi-:arranged toscillate about aninclined axis, an yupper jaw model holder carby s'aid post, means intervosed between `saidpost unupper jaw mode holder yieldingly forcing itinto registry with the lower .jawmodel holder,"y and-,fmeans adjustableupon the opposite Sides of the medial plane for retractmsaid upper jawvmodel holder with respec said lower jw model holder.

16. A dental articulator adapted to be `used in connection with aface-bow, com rising a base, a lower jaw model holder adjustablyconnected with said base, a frame pivoted to said base and arranged torock lat- \eral1y with respect thereto, and comprising lio a hingedjoint adjustable withiespeet to the pivotal axis otsaid trame, an 1 erjaw model holder mljilstuhle i respett to said hir d joint, and. e j)lurality of graduated ape ures in said traine at relatively differentdistances from the plane ol occlusion of the jaw n'ioc'lels, and Ineens;:iirranged to sele i yively engage seid ajnertures for sujgiporting' theeondyle members of said feeebow,

'7; A dental artieulator adapted to he us l in connection with afece-how, coin `)rising a base, a lower jaw inodel. hoh u' adjustablyf.:o1inL-' eted with said hase, a traine nivilted to said hase andarranged to rock literally with respect tliereton and compi-ie ing al'iinged joint justalue with respect to the pivotal :iXi of d iframe, enupper jaw model holder adj u with respect to said hinged j oint1 aplurality of gradueted aper tures 1n sind frame at relatively differentdistances from the plane of occlusion of the jaw models, Ineens arrangedto selectively engage said apertures for supporting'the eondylemen'lbers ot said face-bow, and means carried by said u per jaw modelholder from which said. .ece-bow may be suspended.

" 18. A dental artieulater adapted to be used in connection with aface-bow., com-- prising a a lower jaw model holder adjilstablyAemn'ieeted with said bese and having grliduations, a frame having"graduationst pivoted tov said base and arranged t0 rook lateraliv withrespect thereto, and c0mprising a hinged joint adjustable with' respeetto the pivotal axis of seid frame, ain `upper jew inodel. holderadjustable with respeet to said hinged joint and having graduatiens, aplurality ot graduated apertures in said frame at relatively differentdistances trolnrthe plane of ocelusionof the -jaW nlodels and meansarranged to selectively ein;`r eend le gratfhnltions in the jaw modellholders and frame being arranged to determine the lon- ?gitudinnlrelation of the articulator parts in aeeordanee with the realtiveposition of the condyle points and oeelusal plane as forl'ned luy thefare-bow.

In witness whereof, l', have hereunto Set niy hand this 20th dev ofJune, A. D. '1916.

RUPERT E. HALL.

fitnesses TILLIAM J. RUSSELL, CLIFTON C. HALLOWELL,

said apertures for supporting the members of said facebow, said

